Optic projection : principles, installation and use of the magic lantern, projection microscope, reflecting lantern, moving picture machine, fully illustrated with plates and with over 400 text-figures (1914)

Page scan 000138 from Optic projection : principles, installation and use of the magic lantern, projection microscope, reflecting lantern, moving picture machine, fully illustrated with plates and with over 400 text-figures

Record Details:

Title:
Optic projection : principles, installation and use of the magic lantern, projection microscope, reflecting lantern, moving picture machine, fully illustrated with plates and with over 400 text-figures
Date:
1914
Author:
Gage, Simon Henry, 1851-1946
Publisher:
Ithaca, N.Y. : Comstock Publishing Co.
Volume:
Optic projection : principles, installation and use of the magic lantern, projection microscope, reflecting lantern, moving picture machine, fully illustrated with plates and with over 400 text-figures
Leaf #:
000138
Language:
English
Format:
Books
Contributor:
Gerstein - University of Toronto
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
Bibliography: p. 693-703
Date Added:
July 19, 2022
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CH. V] MAGIC LANTERN WITH PETROLEUM LAMP 123 for getting the best draught when the lamp is turned up full height. The reflector is a concave mirror placed with its center of curvature coinciding with the flame. This serves to reflect the backward extending light to a focus on the flame again, and from thence it passes onward to the condenser with the rays passing directly from the flame to the condenser. FIG. 66. MULTIPLE-WICK, PETROLEUM LAMP FOR THE MAGIC LANTERN. (From the Catalogue of the Mclntosh Battery and Optical Company, 7889). This figure shows that there is a single oil reservoir but four separate wicks, each with a mechanism for turning the wick up or down. It also shows clearly the inclination toward each other of the separate wick holders, and finally that the lamp has a single chimney. The openings in the metal chimney for the reflector and the condenser must be covered with glass or with clear mica or the lamp will smoke. § 198. Management of the lamp. — Before an exhibition the reservoir is filled nearly full with good petroleum (kerosene oil). The wicks must be carefully trimmed until the flame burns without tails. One must be careful in preparing the lamp not to get any oil on the outside, for when the lamp gets hot this oil is sure to smell badly.